Semantic argument here. Neither one of us is right, but I definitely think you are more wrong. Calling Nighthold 7.0 content is a joke. What is Trial of Valor then? Do you place it after both EN and NH? Do you realize why that's stupid?
Imagine you are trying to convey information about the game to someone who has never played it about raid progression this expansion. It would be disingenuous to refer to Nighthold as 7.0 content.
Not accessible = not in game.